+}
+
+void
+update_rev_graph(struct commit *commit)
+{
+ struct rev_stack *parents = &graph_parents[graph_stack_no & 1];
+ struct rev_stack *stack = &graph_stacks[graph_stack_no++ & 1];
+ struct rev_stack *prev_parents = &graph_parents[graph_stack_no & 1];
+ struct rev_stack *graph = &graph_stacks[graph_stack_no & 1];
+ size_t stackpos = 0;
+ size_t i;
+
+ fprintf(stderr, "\n%p <%s> ", graph, commit->id);
+
+ /* First traverse all lines of revisions up to the active one. */
+ for (stackpos = 0; stackpos < stack->size; stackpos++) {
+ if (!strcmp(stack->rev[stackpos], commit->id)) {
+ break;
+ }
+
+ push_rev_stack(graph, stack->rev[stackpos]);
+ }
+
+ assert(commit->graph_size < ARRAY_SIZE(commit->graph));
+
+ for (i = 0; i < parents->size; i++)
+ push_rev_stack(graph, parents->rev[i]);
+
+ i = stackpos + 1;
+
+ /* FIXME: Moving branches left and right when collapsing a branch. */
+ while (i < stack->size)
+ push_rev_stack(graph, stack->rev[i++]);